can you change the code that I will give you according to instructions?

using System;

using System.Collections.Generic;

using System.Text;

namespace LAB$2$

$\{$class Mail

$\{$ private DateTime Date;

private String Subject;

private String Body;

public $($String$,$ String$)$ Sender $\{$ get; private set; $\}$

public $($String$,$ String$)$ Receiver $\{$ get; private set; $\}$

public DateTime GetDate$()\{$ return Date; $\}$

public String GetSubject$()\{$ return Subject; $\}$

public String GetBody$()\{$ return Body; $\}$

public Mail$($DateTime date, $($String$,$ String$)$ sender$,($String$,$ String$)$ receiver, String subject, String body$)$

$\{$Date $=$ date; Sender $=$ sender; Receiver $=$ receiver; Subject $=$ subject; Body $=$ body;

$\}$ public override String ToString$()$

$\{$String finalString $=$ Date.ToShortDateString$()+","+$ Date.ToShortTimeString$()+"$

$"$;

finalString $+=$ "From: $"+$ Sender.Item Sender.Item$2+">$

$"$;

finalString $+="$To: $"+$ Receiver.Item Receiver.Item$2+">$

$"$;

finalString $+=$ "Subject: $"+$ Subject $+"$

$"+$ Body;

return finalString;

$\}$ public virtual void DisplayHeader$()\{$ Console.WriteLine$("$Subject: $"+$ Subject$)$; $\}\}\}$

using System;

using System.Collections.Generic;

using System.Text;

namespace LAB$2$

$\{$ class Mailbox

$\{$ public List Mails $\{$ get; set; $\}$

public int Capacity $\{$ get; set; $\}$

public Mailbox$()$

$\{$ Mails $=$ new List$()$;

Capacity $=5$; $//$ To test capacity

$\}$ public virtual void DisplayMailbox$()$

$\{$ if $($Mails$.$Count $==0)$

Console.WriteLine$("$No mails here!"$)$; else $\{$

for$($int i $=0$; i $$ Mails.Count; i$++)\{$

Console.Write$(($i$+1)+")")$;

Mails$[$i$].$DisplayHeader$()$;$\}\}\}$

public Mail ReadMail$($int selection$)$

$\{$ Console.WriteLine$($Mails$[$selection$].$ToString$())$;

return Mails$[$selection$]$; $\}$

public virtual void DeleteMail$($int selection$)$

$\{$Mails$.$RemoveAt$($selection$)$;$\}\}\}$

using System;

using System.Collections.Generic;

using System.Text;

namespace LAB$2$

$\{$

class User

$\{$

private String Name $\{$ get; set; $\}$

private String EmailAddress $\{$ get; set; $\}$

private Mailbox Inbox $\{$ get; set; $\}$

private Mailbox Outbox $\{$ get; set; $\}$

private Trash Trash $\{$ get; set; $\}$

public User$($String name, String emailAddress$)$

$\{$

Name $=$ name; EmailAddress $=$ emailAddress;

Inbox $=$ new Mailbox$()$; Outbox $=$ new Mailbox$()$; Trash $=$ new Trash$()$;

$\}$

public void ReadMailbox$($String mailbox$)$

$\{$

Mailbox selectedMailbox $=$ SelectMailbox$($mailbox$)$;

if $($selectedMailbox is null$)$

$\{$

Console.WriteLine$("$Incorrect input."$)$;

return;

$\}$

Console.WriteLine$(($mailbox $==$ "I" $?$ "Inbox $"$ : $($mailbox $=="$O$"?$ "Outbox $"$ : "Trash $"))+$ "for $"+$ Name EmailAddress $+">$:$")$;

selectedMailbox.DisplayMailbox$()$;

if $($selectedMailbox$.$Mails.Count $>0)$

$\{$

Console.Write$("$

Enter the number for the mail you want to read: $")$;

int mailSelection $=$ Convert.ToInt$32($Console$.$ReadLine$())$;

Console.Clear$()$;

Mail selectedMail $=$ selectedMailbox.ReadMail$($mailSelection $-1)$;

Console.WriteLine$("$

$1)$ Forward

$2)$ Reply

$3)$ Delete" $+($mailbox $=="$T$"?"$

$4)$ Restore" : $""))$;

Console.Write$("$

Choose an action $(-1$ to exit$)$: $")$;

int selection $=$ Convert.ToInt$32($Console$.$ReadLine$())$;

if $($selection $==-1)$

return;

else if $($selection $==1)$

ForwardMail$($selectedMail$)$;

else if $($selection $==2)$

ReplyToMail$($selectedMail$)$;

else if $($selection $==3)$

$\{$

if $($mailbox $!="$T$")$

Trash.AddMail$($selectedMail$,($mailbox $==$ "I" $?$ InOutEnum.Inbox : InOutEnum.Outbox$))$;

selectedMailbox.DeleteMail$($mailSelection $-1)$;

Console.WriteLine$("$Mail successfull

also I need Trash.cs$,$ AutomatedMail.cs and Program.cs